name: Third Party Licenses
on:
  push:
    branches:
      - trunk
    paths:
      - .github/licenses.tmpl
      - .github/workflows/third-party-licenses.yml
      - go.mod
      - go.sum
      - script/licenses*
jobs:
  # This job is responsible for updating the third-party license reports and source code.
  # It should be safe to cancel as the latest version of `go.mod` should be checked in.
  regenerate-licenses:
    runs-on: ubuntu-latest
    concurrency:
      group: ${{ github.workflow }}
      cancel-in-progress: true
    permissions:
      contents: write
    steps:
      - name: Check out code
        uses: actions/checkout@v4
        with:
          ref: trunk

      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          go-version-file: 'go.mod'

      - name: Regenerate licenses
        run: |
          export GOROOT=$(go env GOROOT)
          export PATH=${GOROOT}/bin:$PATH
          go install github.com/google/go-licenses@5348b744d0983d85713295ea08a20cca1654a45e
          make licenses
          git diff

      - name: Commit and push changes
        run: |
          if git diff --exit-code; then
            echo "No third-party license changes to commit"
          else
            git config --local user.name "github-actions[bot]"
            git config --local user.email "41898282+github-actions[bot]@users.noreply.github.com"
            git add third-party third-party-licenses.*.md
            git commit -m "Generate licenses - $GITHUB_SHA"
            git pull
            git push origin
          fi